Cited by 85Soil Carbon and Nitrogen DynamicsAgricultural Science and FertilizationSoil Management and Crop Yield

Effect of biochar on aerobic processes, enzyme activity, and crop yields in two sandy loam soils

Sun, Zhencai, Bruun, Esben Wilson, Arthur, Emmanuel, de Jonge, Lis Wollesen, Moldrup, Per, Hauggaard-Nielsen, Henrik, Elsgaard, Lars·2014·Biology and Fertility of Soils

Abstract

Biochar added to agricultural soils may sequester carbon and improve physico-chemical conditions for crop growth, due to effects such as increased water and nutrient retention in the root zone. The effects of biochar on soil microbiological properties are less certain. We addressed the effects of wood-based biochar on soil respiration, water contents, potential ammonia oxidation (PAO), arylsulfatase activity (ASA), and crop yields at two temperate sandy loam soils under realistic field conditions. In situ soil respiration, PAO, and ASA were not significantly different in quadruplicate field plots with or without biochar (20 Mg ha⁻¹); however, in the same plots, volumetric water contents increased by 7.5 % due to biochar (P = 0.007). Crop yields (oat) were not significantly different in the first year after biochar application, but in the second year, total yields of spring barley increased by 11 % (P < 0.001), though the increase in grain yield was not significant. Field plots with cumulative biochar rates of up to 100 Mg ha⁻¹, applied during two consecutive years, substantiated that biochar was not inhibitory to PAO and ASA as reference plots consistently showed lowest activities. For PAO, it was found that soil pH, rather than biochar rates, was a driving environmental variable. For ASA, the methodological approach was challenged by product sorption, but results did not suggest that biochar significantly stimulated the enzyme activity. Crop yields of maize in field experiments with 10–100 Mg biochar ha⁻¹ were unaffected by biochar except for a negative effect of the highest annual rates of 50 Mg ha⁻¹ in the first year after application. In conclusion, the present wood-based biochar poorly affected the measured microbial processes and generally resulted in similar crop yields in reference and biochar-amended soil plots.

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Crossref · 10.1007/s00374-014-0928-5

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Authors
Sun, Z., Bruun, E. W., Arthur, E., de Jonge, L. W., Moldrup, P., Hauggaard-Nielsen, H., & Elsgaard, L.
Affiliations
  • Aarhus University (DK)
  • Technical University of Denmark (DK)
Corresponding author
Sun, Zhencai
Venue
Biology and Fertility of Soils
Published
2014-05-27
Volume
50
Issue
7
Pages
1087-1097
ISSN
  • 0178-2762 (ISSN-L)
  • 1432-0789
OpenAlex
W2050770024
Cited by
85
References
66
Citations by year
2026: 4 · 2025: 4 · 2024: 6 · 2023: 5 · 2022: 7 · 2021: 5 · 2020: 10 · 2019: 8 · 2018: 8 · 2017: 7 · 2016: 8 · 2015: 9 · 2014: 4
FWCI
13.17
Type
journal article
Language
en
Open access
closed
Locations
  • Biology and Fertility of Soils (publishedVersion)
  • Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU) (submittedVersion)
  • VBN Forskningsportal (Aalborg Universitet) (submittedVersion)
Funders
  • European Commission
  • China Scholarship Council
  • Danmarks Tekniske Universitet
Topics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Carbon and Nitrogen Dynamics
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Agricultural Science and Fertilization
  • Life Sciences › Agricultural and Biological Sciences › Soil Science › Soil Management and Crop Yield
Keywords
biochar, wood-based biochar, soil respiration, arylsulfatase activity, soil enzyme activity, soil moisture, crop yield, sandy loam soil, soil pH, maize, spring barley, oat, carbon sequestration

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